19868940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1213}}^1$

素因数の和:1248

約数の個数: 144

約数和(自身を含む): 74238528

約数和(自身を除く): 54369588

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 52, 60, 63, 65, 70, 78, 84, 90, 91, 105, 117, 126, 130, 140, 156, 180, 182, 195, 210, 234, 252, 260, 273, 315, 364, 390, 420, 455, 468, 546, 585, 630, 780, 819, 910, 1092, 1170, 1213, 1260, 1365, 1638, 1820, 2340, 2426, 2730, 3276, 3639, 4095, 4852, 5460, 6065, 7278, 8190, 8491, 10917, 12130, 14556, 15769, 16380, 16982, 18195, 21834, 24260, 25473, 31538, 33964, 36390, 42455, 43668, 47307, 50946, 54585, 63076, 72780, 76419, 78845, 84910, 94614, 101892, 109170, 110383, 127365, 141921, 152838, 157690, 169820, 189228, 218340, 220766, 236535, 254730, 283842, 305676, 315380, 331149, 382095, 441532, 473070, 509460, 551915, 567684, 662298, 709605, 764190, 946140, 993447, 1103830, 1324596, 1419210, 1528380, 1655745, 1986894, 2207660, 2838420, 3311490, 3973788, 4967235, 6622980, 9934470, 19868940]

約数ペア:

[(1, 19868940), (2, 9934470), (3, 6622980), (4, 4967235), (5, 3973788), (6, 3311490), (7, 2838420), (9, 2207660), (10, 1986894), (12, 1655745), (13, 1528380), (14, 1419210), (15, 1324596), (18, 1103830), (20, 993447), (21, 946140), (26, 764190), (28, 709605), (30, 662298), (35, 567684), (36, 551915), (39, 509460), (42, 473070), (45, 441532), (52, 382095), (60, 331149), (63, 315380), (65, 305676), (70, 283842), (78, 254730), (84, 236535), (90, 220766), (91, 218340), (105, 189228), (117, 169820), (126, 157690), (130, 152838), (140, 141921), (156, 127365), (180, 110383), (182, 109170), (195, 101892), (210, 94614), (234, 84910), (252, 78845), (260, 76419), (273, 72780), (315, 63076), (364, 54585), (390, 50946), (420, 47307), (455, 43668), (468, 42455), (546, 36390), (585, 33964), (630, 31538), (780, 25473), (819, 24260), (910, 21834), (1092, 18195), (1170, 16982), (1213, 16380), (1260, 15769), (1365, 14556), (1638, 12130), (1820, 10917), (2340, 8491), (2426, 8190), (2730, 7278), (3276, 6065), (3639, 5460), (4095, 4852)]