20351940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1031}}^1$

素因数の和:1097

約数の個数: 96

約数和(自身を含む): 66576384

約数和(自身を除く): 46224444

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 47, 60, 70, 84, 94, 105, 140, 141, 188, 210, 235, 282, 329, 420, 470, 564, 658, 705, 940, 987, 1031, 1316, 1410, 1645, 1974, 2062, 2820, 3093, 3290, 3948, 4124, 4935, 5155, 6186, 6580, 7217, 9870, 10310, 12372, 14434, 15465, 19740, 20620, 21651, 28868, 30930, 36085, 43302, 48457, 61860, 72170, 86604, 96914, 108255, 144340, 145371, 193828, 216510, 242285, 290742, 339199, 433020, 484570, 581484, 678398, 726855, 969140, 1017597, 1356796, 1453710, 1695995, 2035194, 2907420, 3391990, 4070388, 5087985, 6783980, 10175970, 20351940]

約数ペア:

[(1, 20351940), (2, 10175970), (3, 6783980), (4, 5087985), (5, 4070388), (6, 3391990), (7, 2907420), (10, 2035194), (12, 1695995), (14, 1453710), (15, 1356796), (20, 1017597), (21, 969140), (28, 726855), (30, 678398), (35, 581484), (42, 484570), (47, 433020), (60, 339199), (70, 290742), (84, 242285), (94, 216510), (105, 193828), (140, 145371), (141, 144340), (188, 108255), (210, 96914), (235, 86604), (282, 72170), (329, 61860), (420, 48457), (470, 43302), (564, 36085), (658, 30930), (705, 28868), (940, 21651), (987, 20620), (1031, 19740), (1316, 15465), (1410, 14434), (1645, 12372), (1974, 10310), (2062, 9870), (2820, 7217), (3093, 6580), (3290, 6186), (3948, 5155), (4124, 4935)]