20967720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:215

約数の個数: 128

約数和(自身を含む): 67184640

約数和(自身を除く): 46216920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 60, 69, 71, 92, 107, 115, 120, 138, 142, 184, 213, 214, 230, 276, 284, 321, 345, 355, 426, 428, 460, 535, 552, 568, 642, 690, 710, 852, 856, 920, 1065, 1070, 1284, 1380, 1420, 1605, 1633, 1704, 2130, 2140, 2461, 2568, 2760, 2840, 3210, 3266, 4260, 4280, 4899, 4922, 6420, 6532, 7383, 7597, 8165, 8520, 9798, 9844, 12305, 12840, 13064, 14766, 15194, 16330, 19596, 19688, 22791, 24495, 24610, 29532, 30388, 32660, 36915, 37985, 39192, 45582, 48990, 49220, 59064, 60776, 65320, 73830, 75970, 91164, 97980, 98440, 113955, 147660, 151940, 174731, 182328, 195960, 227910, 295320, 303880, 349462, 455820, 524193, 698924, 873655, 911640, 1048386, 1397848, 1747310, 2096772, 2620965, 3494620, 4193544, 5241930, 6989240, 10483860, 20967720]

約数ペア:

[(1, 20967720), (2, 10483860), (3, 6989240), (4, 5241930), (5, 4193544), (6, 3494620), (8, 2620965), (10, 2096772), (12, 1747310), (15, 1397848), (20, 1048386), (23, 911640), (24, 873655), (30, 698924), (40, 524193), (46, 455820), (60, 349462), (69, 303880), (71, 295320), (92, 227910), (107, 195960), (115, 182328), (120, 174731), (138, 151940), (142, 147660), (184, 113955), (213, 98440), (214, 97980), (230, 91164), (276, 75970), (284, 73830), (321, 65320), (345, 60776), (355, 59064), (426, 49220), (428, 48990), (460, 45582), (535, 39192), (552, 37985), (568, 36915), (642, 32660), (690, 30388), (710, 29532), (852, 24610), (856, 24495), (920, 22791), (1065, 19688), (1070, 19596), (1284, 16330), (1380, 15194), (1420, 14766), (1605, 13064), (1633, 12840), (1704, 12305), (2130, 9844), (2140, 9798), (2461, 8520), (2568, 8165), (2760, 7597), (2840, 7383), (3210, 6532), (3266, 6420), (4260, 4922), (4280, 4899)]