20816520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{4231}}^1$

素因数の和:4286

約数の個数: 64

約数和(自身を含む): 63987840

約数和(自身を除く): 43171320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 41, 60, 82, 120, 123, 164, 205, 246, 328, 410, 492, 615, 820, 984, 1230, 1640, 2460, 4231, 4920, 8462, 12693, 16924, 21155, 25386, 33848, 42310, 50772, 63465, 84620, 101544, 126930, 169240, 173471, 253860, 346942, 507720, 520413, 693884, 867355, 1040826, 1387768, 1734710, 2081652, 2602065, 3469420, 4163304, 5204130, 6938840, 10408260, 20816520]

約数ペア:

[(1, 20816520), (2, 10408260), (3, 6938840), (4, 5204130), (5, 4163304), (6, 3469420), (8, 2602065), (10, 2081652), (12, 1734710), (15, 1387768), (20, 1040826), (24, 867355), (30, 693884), (40, 520413), (41, 507720), (60, 346942), (82, 253860), (120, 173471), (123, 169240), (164, 126930), (205, 101544), (246, 84620), (328, 63465), (410, 50772), (492, 42310), (615, 33848), (820, 25386), (984, 21155), (1230, 16924), (1640, 12693), (2460, 8462), (4231, 4920)]