21000908010

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{269}}^1\times {\mathrm{3257}}^1$

素因数の和:3600

約数の個数: 128

約数和(自身を含む): 54721889280

約数和(自身を除く): 33720981270

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 47, 51, 85, 94, 102, 141, 170, 235, 255, 269, 282, 470, 510, 538, 705, 799, 807, 1345, 1410, 1598, 1614, 2397, 2690, 3257, 3995, 4035, 4573, 4794, 6514, 7990, 8070, 9146, 9771, 11985, 12643, 13719, 16285, 19542, 22865, 23970, 25286, 27438, 32570, 37929, 45730, 48855, 55369, 63215, 68595, 75858, 97710, 110738, 126430, 137190, 153079, 166107, 189645, 214931, 276845, 306158, 332214, 379290, 429862, 459237, 553690, 644793, 765395, 830535, 876133, 918474, 1074655, 1289586, 1530790, 1661070, 1752266, 2149310, 2296185, 2602343, 2628399, 3223965, 4380665, 4592370, 5204686, 5256798, 6447930, 7807029, 8761330, 13011715, 13141995, 14894261, 15614058, 26023430, 26283990, 29788522, 39035145, 41178251, 44682783, 74471305, 78070290, 82356502, 89365566, 123534753, 148942610, 205891255, 223413915, 247069506, 411782510, 446827830, 617673765, 700030267, 1235347530, 1400060534, 2100090801, 3500151335, 4200181602, 7000302670, 10500454005, 21000908010]

約数ペア:

[(1, 21000908010), (2, 10500454005), (3, 7000302670), (5, 4200181602), (6, 3500151335), (10, 2100090801), (15, 1400060534), (17, 1235347530), (30, 700030267), (34, 617673765), (47, 446827830), (51, 411782510), (85, 247069506), (94, 223413915), (102, 205891255), (141, 148942610), (170, 123534753), (235, 89365566), (255, 82356502), (269, 78070290), (282, 74471305), (470, 44682783), (510, 41178251), (538, 39035145), (705, 29788522), (799, 26283990), (807, 26023430), (1345, 15614058), (1410, 14894261), (1598, 13141995), (1614, 13011715), (2397, 8761330), (2690, 7807029), (3257, 6447930), (3995, 5256798), (4035, 5204686), (4573, 4592370), (4794, 4380665), (6514, 3223965), (7990, 2628399), (8070, 2602343), (9146, 2296185), (9771, 2149310), (11985, 1752266), (12643, 1661070), (13719, 1530790), (16285, 1289586), (19542, 1074655), (22865, 918474), (23970, 876133), (25286, 830535), (27438, 765395), (32570, 644793), (37929, 553690), (45730, 459237), (48855, 429862), (55369, 379290), (63215, 332214), (68595, 306158), (75858, 276845), (97710, 214931), (110738, 189645), (126430, 166107), (137190, 153079)]