20211894290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{490223}}^1$

素因数の和:490287

約数の個数: 64

約数和(自身を含む): 45179043840

約数和(自身を除く): 24967149550

約数列:

[1, 2, 5, 7, 10, 14, 19, 31, 35, 38, 62, 70, 95, 133, 155, 190, 217, 266, 310, 434, 589, 665, 1085, 1178, 1330, 2170, 2945, 4123, 5890, 8246, 20615, 41230, 490223, 980446, 2451115, 3431561, 4902230, 6863122, 9314237, 15196913, 17157805, 18628474, 30393826, 34315610, 46571185, 65199659, 75984565, 93142370, 106378391, 130399318, 151969130, 212756782, 288741347, 325998295, 531891955, 577482694, 651996590, 1063783910, 1443706735, 2021189429, 2887413470, 4042378858, 10105947145, 20211894290]

約数ペア:

[(1, 20211894290), (2, 10105947145), (5, 4042378858), (7, 2887413470), (10, 2021189429), (14, 1443706735), (19, 1063783910), (31, 651996590), (35, 577482694), (38, 531891955), (62, 325998295), (70, 288741347), (95, 212756782), (133, 151969130), (155, 130399318), (190, 106378391), (217, 93142370), (266, 75984565), (310, 65199659), (434, 46571185), (589, 34315610), (665, 30393826), (1085, 18628474), (1178, 17157805), (1330, 15196913), (2170, 9314237), (2945, 6863122), (4123, 4902230), (5890, 3431561), (8246, 2451115), (20615, 980446), (41230, 490223)]