21000325624

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{198221}}^1$

素因数の和:198304

約数の個数: 64

約数和(自身を含む): 44956749600

約数和(自身を除く): 23956423976

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 41, 68, 76, 82, 136, 152, 164, 323, 328, 646, 697, 779, 1292, 1394, 1558, 2584, 2788, 3116, 5576, 6232, 13243, 26486, 52972, 105944, 198221, 396442, 792884, 1585768, 3369757, 3766199, 6739514, 7532398, 8127061, 13479028, 15064796, 16254122, 26958056, 30129592, 32508244, 64025383, 65016488, 128050766, 138160037, 154414159, 256101532, 276320074, 308828318, 512203064, 552640148, 617656636, 1105280296, 1235313272, 2625040703, 5250081406, 10500162812, 21000325624]

約数ペア:

[(1, 21000325624), (2, 10500162812), (4, 5250081406), (8, 2625040703), (17, 1235313272), (19, 1105280296), (34, 617656636), (38, 552640148), (41, 512203064), (68, 308828318), (76, 276320074), (82, 256101532), (136, 154414159), (152, 138160037), (164, 128050766), (323, 65016488), (328, 64025383), (646, 32508244), (697, 30129592), (779, 26958056), (1292, 16254122), (1394, 15064796), (1558, 13479028), (2584, 8127061), (2788, 7532398), (3116, 6739514), (5576, 3766199), (6232, 3369757), (13243, 1585768), (26486, 792884), (52972, 396442), (105944, 198221)]