18936840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:287

約数の個数: 128

約数和(自身を含む): 62496000

約数和(自身を除く): 43559160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 61, 65, 78, 104, 120, 122, 130, 156, 183, 195, 199, 244, 260, 305, 312, 366, 390, 398, 488, 520, 597, 610, 732, 780, 793, 796, 915, 995, 1194, 1220, 1464, 1560, 1586, 1592, 1830, 1990, 2379, 2388, 2440, 2587, 2985, 3172, 3660, 3965, 3980, 4758, 4776, 5174, 5970, 6344, 7320, 7761, 7930, 7960, 9516, 10348, 11895, 11940, 12139, 12935, 15522, 15860, 19032, 20696, 23790, 23880, 24278, 25870, 31044, 31720, 36417, 38805, 47580, 48556, 51740, 60695, 62088, 72834, 77610, 95160, 97112, 103480, 121390, 145668, 155220, 157807, 182085, 242780, 291336, 310440, 315614, 364170, 473421, 485560, 631228, 728340, 789035, 946842, 1262456, 1456680, 1578070, 1893684, 2367105, 3156140, 3787368, 4734210, 6312280, 9468420, 18936840]

約数ペア:

[(1, 18936840), (2, 9468420), (3, 6312280), (4, 4734210), (5, 3787368), (6, 3156140), (8, 2367105), (10, 1893684), (12, 1578070), (13, 1456680), (15, 1262456), (20, 946842), (24, 789035), (26, 728340), (30, 631228), (39, 485560), (40, 473421), (52, 364170), (60, 315614), (61, 310440), (65, 291336), (78, 242780), (104, 182085), (120, 157807), (122, 155220), (130, 145668), (156, 121390), (183, 103480), (195, 97112), (199, 95160), (244, 77610), (260, 72834), (305, 62088), (312, 60695), (366, 51740), (390, 48556), (398, 47580), (488, 38805), (520, 36417), (597, 31720), (610, 31044), (732, 25870), (780, 24278), (793, 23880), (796, 23790), (915, 20696), (995, 19032), (1194, 15860), (1220, 15522), (1464, 12935), (1560, 12139), (1586, 11940), (1592, 11895), (1830, 10348), (1990, 9516), (2379, 7960), (2388, 7930), (2440, 7761), (2587, 7320), (2985, 6344), (3172, 5970), (3660, 5174), (3965, 4776), (3980, 4758)]