21153790

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1877}}^1$

素因数の和:1921

約数の個数: 48

約数和(自身を含む): 46243872

約数和(自身を除く): 25090082

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 49, 70, 98, 115, 161, 230, 245, 322, 490, 805, 1127, 1610, 1877, 2254, 3754, 5635, 9385, 11270, 13139, 18770, 26278, 43171, 65695, 86342, 91973, 131390, 183946, 215855, 302197, 431710, 459865, 604394, 919730, 1510985, 2115379, 3021970, 4230758, 10576895, 21153790]

約数ペア:

[(1, 21153790), (2, 10576895), (5, 4230758), (7, 3021970), (10, 2115379), (14, 1510985), (23, 919730), (35, 604394), (46, 459865), (49, 431710), (70, 302197), (98, 215855), (115, 183946), (161, 131390), (230, 91973), (245, 86342), (322, 65695), (490, 43171), (805, 26278), (1127, 18770), (1610, 13139), (1877, 11270), (2254, 9385), (3754, 5635)]