28948140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:256

約数の個数: 144

約数和(自身を含む): 96314400

約数和(自身を除く): 67366260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 89, 90, 117, 130, 139, 156, 178, 180, 195, 234, 260, 267, 278, 356, 390, 417, 445, 468, 534, 556, 585, 695, 780, 801, 834, 890, 1068, 1157, 1170, 1251, 1335, 1390, 1602, 1668, 1780, 1807, 2085, 2314, 2340, 2502, 2670, 2780, 3204, 3471, 3614, 4005, 4170, 4628, 5004, 5340, 5421, 5785, 6255, 6942, 7228, 8010, 8340, 9035, 10413, 10842, 11570, 12371, 12510, 13884, 16020, 16263, 17355, 18070, 20826, 21684, 23140, 24742, 25020, 27105, 32526, 34710, 36140, 37113, 41652, 49484, 52065, 54210, 61855, 65052, 69420, 74226, 81315, 104130, 108420, 111339, 123710, 148452, 160823, 162630, 185565, 208260, 222678, 247420, 321646, 325260, 371130, 445356, 482469, 556695, 643292, 742260, 804115, 964938, 1113390, 1447407, 1608230, 1929876, 2226780, 2412345, 2894814, 3216460, 4824690, 5789628, 7237035, 9649380, 14474070, 28948140]

約数ペア:

[(1, 28948140), (2, 14474070), (3, 9649380), (4, 7237035), (5, 5789628), (6, 4824690), (9, 3216460), (10, 2894814), (12, 2412345), (13, 2226780), (15, 1929876), (18, 1608230), (20, 1447407), (26, 1113390), (30, 964938), (36, 804115), (39, 742260), (45, 643292), (52, 556695), (60, 482469), (65, 445356), (78, 371130), (89, 325260), (90, 321646), (117, 247420), (130, 222678), (139, 208260), (156, 185565), (178, 162630), (180, 160823), (195, 148452), (234, 123710), (260, 111339), (267, 108420), (278, 104130), (356, 81315), (390, 74226), (417, 69420), (445, 65052), (468, 61855), (534, 54210), (556, 52065), (585, 49484), (695, 41652), (780, 37113), (801, 36140), (834, 34710), (890, 32526), (1068, 27105), (1157, 25020), (1170, 24742), (1251, 23140), (1335, 21684), (1390, 20826), (1602, 18070), (1668, 17355), (1780, 16263), (1807, 16020), (2085, 13884), (2314, 12510), (2340, 12371), (2502, 11570), (2670, 10842), (2780, 10413), (3204, 9035), (3471, 8340), (3614, 8010), (4005, 7228), (4170, 6942), (4628, 6255), (5004, 5785), (5340, 5421)]