221505752

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1\times {\mathrm{383}}^1$

素因数の和:552

約数の個数: 64

約数和(自身を含む): 460615680

約数和(自身を除く): 239109928

約数列:

[1, 2, 4, 8, 13, 26, 52, 67, 83, 104, 134, 166, 268, 332, 383, 536, 664, 766, 871, 1079, 1532, 1742, 2158, 3064, 3484, 4316, 4979, 5561, 6968, 8632, 9958, 11122, 19916, 22244, 25661, 31789, 39832, 44488, 51322, 63578, 72293, 102644, 127156, 144586, 205288, 254312, 289172, 333593, 413257, 578344, 667186, 826514, 1334372, 1653028, 2129863, 2668744, 3306056, 4259726, 8519452, 17038904, 27688219, 55376438, 110752876, 221505752]

約数ペア:

[(1, 221505752), (2, 110752876), (4, 55376438), (8, 27688219), (13, 17038904), (26, 8519452), (52, 4259726), (67, 3306056), (83, 2668744), (104, 2129863), (134, 1653028), (166, 1334372), (268, 826514), (332, 667186), (383, 578344), (536, 413257), (664, 333593), (766, 289172), (871, 254312), (1079, 205288), (1532, 144586), (1742, 127156), (2158, 102644), (3064, 72293), (3484, 63578), (4316, 51322), (4979, 44488), (5561, 39832), (6968, 31789), (8632, 25661), (9958, 22244), (11122, 19916)]