21370836500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{3287821}}^1$

素因数の和:3287853

約数の個数: 48

約数和(自身を含む): 50264222736

約数和(自身を除く): 28893386236

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1300, 1625, 3250, 6500, 3287821, 6575642, 13151284, 16439105, 32878210, 42741673, 65756420, 82195525, 85483346, 164391050, 170966692, 213708365, 328782100, 410977625, 427416730, 821955250, 854833460, 1068541825, 1643910500, 2137083650, 4274167300, 5342709125, 10685418250, 21370836500]

約数ペア:

[(1, 21370836500), (2, 10685418250), (4, 5342709125), (5, 4274167300), (10, 2137083650), (13, 1643910500), (20, 1068541825), (25, 854833460), (26, 821955250), (50, 427416730), (52, 410977625), (65, 328782100), (100, 213708365), (125, 170966692), (130, 164391050), (250, 85483346), (260, 82195525), (325, 65756420), (500, 42741673), (650, 32878210), (1300, 16439105), (1625, 13151284), (3250, 6575642), (6500, 3287821)]