31490460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{251}}^1$

素因数の和:324

約数の個数: 144

約数和(自身を含む): 104019552

約数和(自身を除く): 72529092

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 41, 45, 51, 60, 68, 82, 85, 90, 102, 123, 153, 164, 170, 180, 204, 205, 246, 251, 255, 306, 340, 369, 410, 492, 502, 510, 612, 615, 697, 738, 753, 765, 820, 1004, 1020, 1230, 1255, 1394, 1476, 1506, 1530, 1845, 2091, 2259, 2460, 2510, 2788, 3012, 3060, 3485, 3690, 3765, 4182, 4267, 4518, 5020, 6273, 6970, 7380, 7530, 8364, 8534, 9036, 10291, 10455, 11295, 12546, 12801, 13940, 15060, 17068, 20582, 20910, 21335, 22590, 25092, 25602, 30873, 31365, 38403, 41164, 41820, 42670, 45180, 51204, 51455, 61746, 62730, 64005, 76806, 85340, 92619, 102910, 123492, 125460, 128010, 153612, 154365, 174947, 185238, 192015, 205820, 256020, 308730, 349894, 370476, 384030, 463095, 524841, 617460, 699788, 768060, 874735, 926190, 1049682, 1574523, 1749470, 1852380, 2099364, 2624205, 3149046, 3498940, 5248410, 6298092, 7872615, 10496820, 15745230, 31490460]

約数ペア:

[(1, 31490460), (2, 15745230), (3, 10496820), (4, 7872615), (5, 6298092), (6, 5248410), (9, 3498940), (10, 3149046), (12, 2624205), (15, 2099364), (17, 1852380), (18, 1749470), (20, 1574523), (30, 1049682), (34, 926190), (36, 874735), (41, 768060), (45, 699788), (51, 617460), (60, 524841), (68, 463095), (82, 384030), (85, 370476), (90, 349894), (102, 308730), (123, 256020), (153, 205820), (164, 192015), (170, 185238), (180, 174947), (204, 154365), (205, 153612), (246, 128010), (251, 125460), (255, 123492), (306, 102910), (340, 92619), (369, 85340), (410, 76806), (492, 64005), (502, 62730), (510, 61746), (612, 51455), (615, 51204), (697, 45180), (738, 42670), (753, 41820), (765, 41164), (820, 38403), (1004, 31365), (1020, 30873), (1230, 25602), (1255, 25092), (1394, 22590), (1476, 21335), (1506, 20910), (1530, 20582), (1845, 17068), (2091, 15060), (2259, 13940), (2460, 12801), (2510, 12546), (2788, 11295), (3012, 10455), (3060, 10291), (3485, 9036), (3690, 8534), (3765, 8364), (4182, 7530), (4267, 7380), (4518, 6970), (5020, 6273)]