87515480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:205

約数の個数: 128

約数和(自身を含む): 224985600

約数和(自身を除く): 137470120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 61, 62, 65, 89, 104, 122, 124, 130, 155, 178, 244, 248, 260, 305, 310, 356, 403, 445, 488, 520, 610, 620, 712, 793, 806, 890, 1157, 1220, 1240, 1586, 1612, 1780, 1891, 2015, 2314, 2440, 2759, 3172, 3224, 3560, 3782, 3965, 4030, 4628, 5429, 5518, 5785, 6344, 7564, 7930, 8060, 9256, 9455, 10858, 11036, 11570, 13795, 15128, 15860, 16120, 18910, 21716, 22072, 23140, 24583, 27145, 27590, 31720, 35867, 37820, 43432, 46280, 49166, 54290, 55180, 70577, 71734, 75640, 98332, 108580, 110360, 122915, 141154, 143468, 168299, 179335, 196664, 217160, 245830, 282308, 286936, 336598, 352885, 358670, 491660, 564616, 673196, 705770, 717340, 841495, 983320, 1346392, 1411540, 1434680, 1682990, 2187887, 2823080, 3365980, 4375774, 6731960, 8751548, 10939435, 17503096, 21878870, 43757740, 87515480]

約数ペア:

[(1, 87515480), (2, 43757740), (4, 21878870), (5, 17503096), (8, 10939435), (10, 8751548), (13, 6731960), (20, 4375774), (26, 3365980), (31, 2823080), (40, 2187887), (52, 1682990), (61, 1434680), (62, 1411540), (65, 1346392), (89, 983320), (104, 841495), (122, 717340), (124, 705770), (130, 673196), (155, 564616), (178, 491660), (244, 358670), (248, 352885), (260, 336598), (305, 286936), (310, 282308), (356, 245830), (403, 217160), (445, 196664), (488, 179335), (520, 168299), (610, 143468), (620, 141154), (712, 122915), (793, 110360), (806, 108580), (890, 98332), (1157, 75640), (1220, 71734), (1240, 70577), (1586, 55180), (1612, 54290), (1780, 49166), (1891, 46280), (2015, 43432), (2314, 37820), (2440, 35867), (2759, 31720), (3172, 27590), (3224, 27145), (3560, 24583), (3782, 23140), (3965, 22072), (4030, 21716), (4628, 18910), (5429, 16120), (5518, 15860), (5785, 15128), (6344, 13795), (7564, 11570), (7930, 11036), (8060, 10858), (9256, 9455)]