20912040

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{67}}^1$

素因数の和:121

約数の個数: 192

約数和(自身を含む): 75153600

約数和(自身を除く): 54241560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 27, 30, 34, 36, 40, 45, 51, 54, 60, 67, 68, 72, 85, 90, 102, 108, 120, 134, 135, 136, 153, 170, 180, 201, 204, 216, 255, 268, 270, 289, 306, 335, 340, 360, 402, 408, 459, 510, 536, 540, 578, 603, 612, 670, 680, 765, 804, 867, 918, 1005, 1020, 1080, 1139, 1156, 1206, 1224, 1340, 1445, 1530, 1608, 1734, 1809, 1836, 2010, 2040, 2278, 2295, 2312, 2412, 2601, 2680, 2890, 3015, 3060, 3417, 3468, 3618, 3672, 4020, 4335, 4556, 4590, 4824, 5202, 5695, 5780, 6030, 6120, 6834, 6936, 7236, 7803, 8040, 8670, 9045, 9112, 9180, 10251, 10404, 11390, 11560, 12060, 13005, 13668, 14472, 15606, 17085, 17340, 18090, 18360, 19363, 20502, 20808, 22780, 24120, 26010, 27336, 30753, 31212, 34170, 34680, 36180, 38726, 39015, 41004, 45560, 51255, 52020, 58089, 61506, 62424, 68340, 72360, 77452, 78030, 82008, 96815, 102510, 104040, 116178, 123012, 136680, 153765, 154904, 156060, 174267, 193630, 205020, 232356, 246024, 290445, 307530, 312120, 348534, 387260, 410040, 464712, 522801, 580890, 615060, 697068, 774520, 871335, 1045602, 1161780, 1230120, 1394136, 1742670, 2091204, 2323560, 2614005, 3485340, 4182408, 5228010, 6970680, 10456020, 20912040]

約数ペア:

[(1, 20912040), (2, 10456020), (3, 6970680), (4, 5228010), (5, 4182408), (6, 3485340), (8, 2614005), (9, 2323560), (10, 2091204), (12, 1742670), (15, 1394136), (17, 1230120), (18, 1161780), (20, 1045602), (24, 871335), (27, 774520), (30, 697068), (34, 615060), (36, 580890), (40, 522801), (45, 464712), (51, 410040), (54, 387260), (60, 348534), (67, 312120), (68, 307530), (72, 290445), (85, 246024), (90, 232356), (102, 205020), (108, 193630), (120, 174267), (134, 156060), (135, 154904), (136, 153765), (153, 136680), (170, 123012), (180, 116178), (201, 104040), (204, 102510), (216, 96815), (255, 82008), (268, 78030), (270, 77452), (289, 72360), (306, 68340), (335, 62424), (340, 61506), (360, 58089), (402, 52020), (408, 51255), (459, 45560), (510, 41004), (536, 39015), (540, 38726), (578, 36180), (603, 34680), (612, 34170), (670, 31212), (680, 30753), (765, 27336), (804, 26010), (867, 24120), (918, 22780), (1005, 20808), (1020, 20502), (1080, 19363), (1139, 18360), (1156, 18090), (1206, 17340), (1224, 17085), (1340, 15606), (1445, 14472), (1530, 13668), (1608, 13005), (1734, 12060), (1809, 11560), (1836, 11390), (2010, 10404), (2040, 10251), (2278, 9180), (2295, 9112), (2312, 9045), (2412, 8670), (2601, 8040), (2680, 7803), (2890, 7236), (3015, 6936), (3060, 6834), (3417, 6120), (3468, 6030), (3618, 5780), (3672, 5695), (4020, 5202), (4335, 4824), (4556, 4590)]