1916720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1$

素因数の和:142

約数の個数: 80

約数和(自身を含む): 5103840

約数和(自身を除く): 3187120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 97, 104, 130, 152, 190, 194, 208, 247, 260, 304, 380, 388, 485, 494, 520, 760, 776, 970, 988, 1040, 1235, 1261, 1520, 1552, 1843, 1940, 1976, 2470, 2522, 3686, 3880, 3952, 4940, 5044, 6305, 7372, 7760, 9215, 9880, 10088, 12610, 14744, 18430, 19760, 20176, 23959, 25220, 29488, 36860, 47918, 50440, 73720, 95836, 100880, 119795, 147440, 191672, 239590, 383344, 479180, 958360, 1916720]

約数ペア:

[(1, 1916720), (2, 958360), (4, 479180), (5, 383344), (8, 239590), (10, 191672), (13, 147440), (16, 119795), (19, 100880), (20, 95836), (26, 73720), (38, 50440), (40, 47918), (52, 36860), (65, 29488), (76, 25220), (80, 23959), (95, 20176), (97, 19760), (104, 18430), (130, 14744), (152, 12610), (190, 10088), (194, 9880), (208, 9215), (247, 7760), (260, 7372), (304, 6305), (380, 5044), (388, 4940), (485, 3952), (494, 3880), (520, 3686), (760, 2522), (776, 2470), (970, 1976), (988, 1940), (1040, 1843), (1235, 1552), (1261, 1520)]