21206340

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{227}}^1$

素因数の和:418

約数の個数: 96

約数和(自身を含む): 66648960

約数和(自身を除く): 45442620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 173, 180, 227, 270, 346, 454, 519, 540, 681, 692, 865, 908, 1038, 1135, 1362, 1557, 1730, 2043, 2076, 2270, 2595, 2724, 3114, 3405, 3460, 4086, 4540, 4671, 5190, 6129, 6228, 6810, 7785, 8172, 9342, 10215, 10380, 12258, 13620, 15570, 18684, 20430, 23355, 24516, 30645, 31140, 39271, 40860, 46710, 61290, 78542, 93420, 117813, 122580, 157084, 196355, 235626, 353439, 392710, 471252, 589065, 706878, 785420, 1060317, 1178130, 1413756, 1767195, 2120634, 2356260, 3534390, 4241268, 5301585, 7068780, 10603170, 21206340]

約数ペア:

[(1, 21206340), (2, 10603170), (3, 7068780), (4, 5301585), (5, 4241268), (6, 3534390), (9, 2356260), (10, 2120634), (12, 1767195), (15, 1413756), (18, 1178130), (20, 1060317), (27, 785420), (30, 706878), (36, 589065), (45, 471252), (54, 392710), (60, 353439), (90, 235626), (108, 196355), (135, 157084), (173, 122580), (180, 117813), (227, 93420), (270, 78542), (346, 61290), (454, 46710), (519, 40860), (540, 39271), (681, 31140), (692, 30645), (865, 24516), (908, 23355), (1038, 20430), (1135, 18684), (1362, 15570), (1557, 13620), (1730, 12258), (2043, 10380), (2076, 10215), (2270, 9342), (2595, 8172), (2724, 7785), (3114, 6810), (3405, 6228), (3460, 6129), (4086, 5190), (4540, 4671)]