1640455000

素因数分解:

$2^3\times 5^4\times {\mathrm{71}}^1\times {\mathrm{4621}}^1$

素因数の和:4718

約数の個数: 80

約数和(自身を含む): 3898564560

約数和(自身を除く): 2258109560

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 71, 100, 125, 142, 200, 250, 284, 355, 500, 568, 625, 710, 1000, 1250, 1420, 1775, 2500, 2840, 3550, 4621, 5000, 7100, 8875, 9242, 14200, 17750, 18484, 23105, 35500, 36968, 44375, 46210, 71000, 88750, 92420, 115525, 177500, 184840, 231050, 328091, 355000, 462100, 577625, 656182, 924200, 1155250, 1312364, 1640455, 2310500, 2624728, 2888125, 3280910, 4621000, 5776250, 6561820, 8202275, 11552500, 13123640, 16404550, 23105000, 32809100, 41011375, 65618200, 82022750, 164045500, 205056875, 328091000, 410113750, 820227500, 1640455000]

約数ペア:

[(1, 1640455000), (2, 820227500), (4, 410113750), (5, 328091000), (8, 205056875), (10, 164045500), (20, 82022750), (25, 65618200), (40, 41011375), (50, 32809100), (71, 23105000), (100, 16404550), (125, 13123640), (142, 11552500), (200, 8202275), (250, 6561820), (284, 5776250), (355, 4621000), (500, 3280910), (568, 2888125), (625, 2624728), (710, 2310500), (1000, 1640455), (1250, 1312364), (1420, 1155250), (1775, 924200), (2500, 656182), (2840, 577625), (3550, 462100), (4621, 355000), (5000, 328091), (7100, 231050), (8875, 184840), (9242, 177500), (14200, 115525), (17750, 92420), (18484, 88750), (23105, 71000), (35500, 46210), (36968, 44375)]