18782900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:201

約数の個数: 72

約数和(自身を含む): 43163904

約数和(自身を除く): 24381004

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 73, 83, 100, 124, 146, 155, 166, 292, 310, 332, 365, 415, 620, 730, 775, 830, 1460, 1550, 1660, 1825, 2075, 2263, 2573, 3100, 3650, 4150, 4526, 5146, 6059, 7300, 8300, 9052, 10292, 11315, 12118, 12865, 22630, 24236, 25730, 30295, 45260, 51460, 56575, 60590, 64325, 113150, 121180, 128650, 151475, 187829, 226300, 257300, 302950, 375658, 605900, 751316, 939145, 1878290, 3756580, 4695725, 9391450, 18782900]

約数ペア:

[(1, 18782900), (2, 9391450), (4, 4695725), (5, 3756580), (10, 1878290), (20, 939145), (25, 751316), (31, 605900), (50, 375658), (62, 302950), (73, 257300), (83, 226300), (100, 187829), (124, 151475), (146, 128650), (155, 121180), (166, 113150), (292, 64325), (310, 60590), (332, 56575), (365, 51460), (415, 45260), (620, 30295), (730, 25730), (775, 24236), (830, 22630), (1460, 12865), (1550, 12118), (1660, 11315), (1825, 10292), (2075, 9052), (2263, 8300), (2573, 7300), (3100, 6059), (3650, 5146), (4150, 4526)]