278460

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1$

素因数の和:52

約数の個数: 144

約数和(自身を含む): 1100736

約数和(自身を除く): 822276

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 17, 18, 20, 21, 26, 28, 30, 34, 35, 36, 39, 42, 45, 51, 52, 60, 63, 65, 68, 70, 78, 84, 85, 90, 91, 102, 105, 117, 119, 126, 130, 140, 153, 156, 170, 180, 182, 195, 204, 210, 221, 234, 238, 252, 255, 260, 273, 306, 315, 340, 357, 364, 390, 420, 442, 455, 468, 476, 510, 546, 585, 595, 612, 630, 663, 714, 765, 780, 819, 884, 910, 1020, 1071, 1092, 1105, 1170, 1190, 1260, 1326, 1365, 1428, 1530, 1547, 1638, 1785, 1820, 1989, 2142, 2210, 2340, 2380, 2652, 2730, 3060, 3094, 3276, 3315, 3570, 3978, 4095, 4284, 4420, 4641, 5355, 5460, 6188, 6630, 7140, 7735, 7956, 8190, 9282, 9945, 10710, 13260, 13923, 15470, 16380, 18564, 19890, 21420, 23205, 27846, 30940, 39780, 46410, 55692, 69615, 92820, 139230, 278460]

約数ペア:

[(1, 278460), (2, 139230), (3, 92820), (4, 69615), (5, 55692), (6, 46410), (7, 39780), (9, 30940), (10, 27846), (12, 23205), (13, 21420), (14, 19890), (15, 18564), (17, 16380), (18, 15470), (20, 13923), (21, 13260), (26, 10710), (28, 9945), (30, 9282), (34, 8190), (35, 7956), (36, 7735), (39, 7140), (42, 6630), (45, 6188), (51, 5460), (52, 5355), (60, 4641), (63, 4420), (65, 4284), (68, 4095), (70, 3978), (78, 3570), (84, 3315), (85, 3276), (90, 3094), (91, 3060), (102, 2730), (105, 2652), (117, 2380), (119, 2340), (126, 2210), (130, 2142), (140, 1989), (153, 1820), (156, 1785), (170, 1638), (180, 1547), (182, 1530), (195, 1428), (204, 1365), (210, 1326), (221, 1260), (234, 1190), (238, 1170), (252, 1105), (255, 1092), (260, 1071), (273, 1020), (306, 910), (315, 884), (340, 819), (357, 780), (364, 765), (390, 714), (420, 663), (442, 630), (455, 612), (468, 595), (476, 585), (510, 546)]