21153080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2141}}^1$

素因数の和:2184

約数の個数: 64

約数和(自身を含む): 53978400

約数和(自身を除く): 32825320

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2141, 2470, 4282, 4940, 8564, 9880, 10705, 17128, 21410, 27833, 40679, 42820, 55666, 81358, 85640, 111332, 139165, 162716, 203395, 222664, 278330, 325432, 406790, 528827, 556660, 813580, 1057654, 1113320, 1627160, 2115308, 2644135, 4230616, 5288270, 10576540, 21153080]

約数ペア:

[(1, 21153080), (2, 10576540), (4, 5288270), (5, 4230616), (8, 2644135), (10, 2115308), (13, 1627160), (19, 1113320), (20, 1057654), (26, 813580), (38, 556660), (40, 528827), (52, 406790), (65, 325432), (76, 278330), (95, 222664), (104, 203395), (130, 162716), (152, 139165), (190, 111332), (247, 85640), (260, 81358), (380, 55666), (494, 42820), (520, 40679), (760, 27833), (988, 21410), (1235, 17128), (1976, 10705), (2141, 9880), (2470, 8564), (4282, 4940)]