20996300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{521}}^1$

素因数の和:579

約数の個数: 72

約数和(自身を含む): 50746752

約数和(自身を除く): 29750452

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 31, 50, 52, 62, 65, 100, 124, 130, 155, 260, 310, 325, 403, 521, 620, 650, 775, 806, 1042, 1300, 1550, 1612, 2015, 2084, 2605, 3100, 4030, 5210, 6773, 8060, 10075, 10420, 13025, 13546, 16151, 20150, 26050, 27092, 32302, 33865, 40300, 52100, 64604, 67730, 80755, 135460, 161510, 169325, 209963, 323020, 338650, 403775, 419926, 677300, 807550, 839852, 1049815, 1615100, 2099630, 4199260, 5249075, 10498150, 20996300]

約数ペア:

[(1, 20996300), (2, 10498150), (4, 5249075), (5, 4199260), (10, 2099630), (13, 1615100), (20, 1049815), (25, 839852), (26, 807550), (31, 677300), (50, 419926), (52, 403775), (62, 338650), (65, 323020), (100, 209963), (124, 169325), (130, 161510), (155, 135460), (260, 80755), (310, 67730), (325, 64604), (403, 52100), (521, 40300), (620, 33865), (650, 32302), (775, 27092), (806, 26050), (1042, 20150), (1300, 16151), (1550, 13546), (1612, 13025), (2015, 10420), (2084, 10075), (2605, 8060), (3100, 6773), (4030, 5210)]