20950920

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1021}}^1$

素因数の和:1060

約数の個数: 128

約数和(自身を含む): 73584000

約数和(自身を除く): 52633080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 54, 57, 60, 72, 76, 90, 95, 108, 114, 120, 135, 152, 171, 180, 190, 216, 228, 270, 285, 342, 360, 380, 456, 513, 540, 570, 684, 760, 855, 1021, 1026, 1080, 1140, 1368, 1710, 2042, 2052, 2280, 2565, 3063, 3420, 4084, 4104, 5105, 5130, 6126, 6840, 8168, 9189, 10210, 10260, 12252, 15315, 18378, 19399, 20420, 20520, 24504, 27567, 30630, 36756, 38798, 40840, 45945, 55134, 58197, 61260, 73512, 77596, 91890, 96995, 110268, 116394, 122520, 137835, 155192, 174591, 183780, 193990, 220536, 232788, 275670, 290985, 349182, 367560, 387980, 465576, 523773, 551340, 581970, 698364, 775960, 872955, 1047546, 1102680, 1163940, 1396728, 1745910, 2095092, 2327880, 2618865, 3491820, 4190184, 5237730, 6983640, 10475460, 20950920]

約数ペア:

[(1, 20950920), (2, 10475460), (3, 6983640), (4, 5237730), (5, 4190184), (6, 3491820), (8, 2618865), (9, 2327880), (10, 2095092), (12, 1745910), (15, 1396728), (18, 1163940), (19, 1102680), (20, 1047546), (24, 872955), (27, 775960), (30, 698364), (36, 581970), (38, 551340), (40, 523773), (45, 465576), (54, 387980), (57, 367560), (60, 349182), (72, 290985), (76, 275670), (90, 232788), (95, 220536), (108, 193990), (114, 183780), (120, 174591), (135, 155192), (152, 137835), (171, 122520), (180, 116394), (190, 110268), (216, 96995), (228, 91890), (270, 77596), (285, 73512), (342, 61260), (360, 58197), (380, 55134), (456, 45945), (513, 40840), (540, 38798), (570, 36756), (684, 30630), (760, 27567), (855, 24504), (1021, 20520), (1026, 20420), (1080, 19399), (1140, 18378), (1368, 15315), (1710, 12252), (2042, 10260), (2052, 10210), (2280, 9189), (2565, 8168), (3063, 6840), (3420, 6126), (4084, 5130), (4104, 5105)]