21416325

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{113}}^1$

素因数の和:171

約数の個数: 72

約数和(自身を含む): 43086528

約数和(自身を除く): 21670203

約数列:

[1, 3, 5, 7, 15, 19, 21, 25, 35, 57, 75, 95, 105, 113, 133, 175, 285, 339, 361, 399, 475, 525, 565, 665, 791, 1083, 1425, 1695, 1805, 1995, 2147, 2373, 2527, 2825, 3325, 3955, 5415, 6441, 7581, 8475, 9025, 9975, 10735, 11865, 12635, 15029, 19775, 27075, 32205, 37905, 40793, 45087, 53675, 59325, 63175, 75145, 122379, 161025, 189525, 203965, 225435, 285551, 375725, 611895, 856653, 1019825, 1127175, 1427755, 3059475, 4283265, 7138775, 21416325]

約数ペア:

[(1, 21416325), (3, 7138775), (5, 4283265), (7, 3059475), (15, 1427755), (19, 1127175), (21, 1019825), (25, 856653), (35, 611895), (57, 375725), (75, 285551), (95, 225435), (105, 203965), (113, 189525), (133, 161025), (175, 122379), (285, 75145), (339, 63175), (361, 59325), (399, 53675), (475, 45087), (525, 40793), (565, 37905), (665, 32205), (791, 27075), (1083, 19775), (1425, 15029), (1695, 12635), (1805, 11865), (1995, 10735), (2147, 9975), (2373, 9025), (2527, 8475), (2825, 7581), (3325, 6441), (3955, 5415)]