400156900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{27983}}^1$

素因数の和:28021

約数の個数: 72

約数和(自身を含む): 1020184704

約数和(自身を除く): 620027804

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 25, 26, 44, 50, 52, 55, 65, 100, 110, 130, 143, 220, 260, 275, 286, 325, 550, 572, 650, 715, 1100, 1300, 1430, 2860, 3575, 7150, 14300, 27983, 55966, 111932, 139915, 279830, 307813, 363779, 559660, 615626, 699575, 727558, 1231252, 1399150, 1455116, 1539065, 1818895, 2798300, 3078130, 3637790, 4001569, 6156260, 7275580, 7695325, 8003138, 9094475, 15390650, 16006276, 18188950, 20007845, 30781300, 36377900, 40015690, 80031380, 100039225, 200078450, 400156900]

約数ペア:

[(1, 400156900), (2, 200078450), (4, 100039225), (5, 80031380), (10, 40015690), (11, 36377900), (13, 30781300), (20, 20007845), (22, 18188950), (25, 16006276), (26, 15390650), (44, 9094475), (50, 8003138), (52, 7695325), (55, 7275580), (65, 6156260), (100, 4001569), (110, 3637790), (130, 3078130), (143, 2798300), (220, 1818895), (260, 1539065), (275, 1455116), (286, 1399150), (325, 1231252), (550, 727558), (572, 699575), (650, 615626), (715, 559660), (1100, 363779), (1300, 307813), (1430, 279830), (2860, 139915), (3575, 111932), (7150, 55966), (14300, 27983)]