20181465

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:119

約数の個数: 96

約数和(自身を含む): 40974336

約数和(自身を除く): 20792871

約数列:

[1, 3, 5, 9, 15, 17, 23, 31, 37, 45, 51, 69, 85, 93, 111, 115, 153, 155, 185, 207, 255, 279, 333, 345, 391, 465, 527, 555, 629, 713, 765, 851, 1035, 1147, 1173, 1395, 1581, 1665, 1887, 1955, 2139, 2553, 2635, 3145, 3441, 3519, 3565, 4255, 4743, 5661, 5735, 5865, 6417, 7659, 7905, 9435, 10323, 10695, 12121, 12765, 14467, 17205, 17595, 19499, 23715, 26381, 28305, 32085, 36363, 38295, 43401, 51615, 58497, 60605, 72335, 79143, 97495, 109089, 130203, 131905, 175491, 181815, 217005, 237429, 292485, 395715, 448477, 545445, 651015, 877455, 1187145, 1345431, 2242385, 4036293, 6727155, 20181465]

約数ペア:

[(1, 20181465), (3, 6727155), (5, 4036293), (9, 2242385), (15, 1345431), (17, 1187145), (23, 877455), (31, 651015), (37, 545445), (45, 448477), (51, 395715), (69, 292485), (85, 237429), (93, 217005), (111, 181815), (115, 175491), (153, 131905), (155, 130203), (185, 109089), (207, 97495), (255, 79143), (279, 72335), (333, 60605), (345, 58497), (391, 51615), (465, 43401), (527, 38295), (555, 36363), (629, 32085), (713, 28305), (765, 26381), (851, 23715), (1035, 19499), (1147, 17595), (1173, 17205), (1395, 14467), (1581, 12765), (1665, 12121), (1887, 10695), (1955, 10323), (2139, 9435), (2553, 7905), (2635, 7659), (3145, 6417), (3441, 5865), (3519, 5735), (3565, 5661), (4255, 4743)]