21407360

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:146

約数の個数: 128

約数和(自身を含む): 57576960

約数和(自身を除く): 36169600

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 83, 104, 124, 128, 130, 155, 160, 166, 208, 248, 260, 310, 320, 332, 403, 415, 416, 496, 520, 620, 640, 664, 806, 830, 832, 992, 1040, 1079, 1240, 1328, 1612, 1660, 1664, 1984, 2015, 2080, 2158, 2480, 2573, 2656, 3224, 3320, 3968, 4030, 4160, 4316, 4960, 5146, 5312, 5395, 6448, 6640, 8060, 8320, 8632, 9920, 10292, 10624, 10790, 12865, 12896, 13280, 16120, 17264, 19840, 20584, 21580, 25730, 25792, 26560, 32240, 33449, 34528, 41168, 43160, 51460, 51584, 53120, 64480, 66898, 69056, 82336, 86320, 102920, 128960, 133796, 138112, 164672, 167245, 172640, 205840, 257920, 267592, 329344, 334490, 345280, 411680, 535184, 668980, 690560, 823360, 1070368, 1337960, 1646720, 2140736, 2675920, 4281472, 5351840, 10703680, 21407360]

約数ペア:

[(1, 21407360), (2, 10703680), (4, 5351840), (5, 4281472), (8, 2675920), (10, 2140736), (13, 1646720), (16, 1337960), (20, 1070368), (26, 823360), (31, 690560), (32, 668980), (40, 535184), (52, 411680), (62, 345280), (64, 334490), (65, 329344), (80, 267592), (83, 257920), (104, 205840), (124, 172640), (128, 167245), (130, 164672), (155, 138112), (160, 133796), (166, 128960), (208, 102920), (248, 86320), (260, 82336), (310, 69056), (320, 66898), (332, 64480), (403, 53120), (415, 51584), (416, 51460), (496, 43160), (520, 41168), (620, 34528), (640, 33449), (664, 32240), (806, 26560), (830, 25792), (832, 25730), (992, 21580), (1040, 20584), (1079, 19840), (1240, 17264), (1328, 16120), (1612, 13280), (1660, 12896), (1664, 12865), (1984, 10790), (2015, 10624), (2080, 10292), (2158, 9920), (2480, 8632), (2573, 8320), (2656, 8060), (3224, 6640), (3320, 6448), (3968, 5395), (4030, 5312), (4160, 5146), (4316, 4960)]