31200780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{181}}^1$

素因数の和:236

約数の個数: 144

約数和(自身を含む): 100717344

約数和(自身を除く): 69516564

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 17, 20, 26, 30, 34, 39, 51, 52, 60, 65, 68, 78, 85, 102, 130, 156, 169, 170, 181, 195, 204, 221, 255, 260, 338, 340, 362, 390, 442, 507, 510, 543, 663, 676, 724, 780, 845, 884, 905, 1014, 1020, 1086, 1105, 1326, 1690, 1810, 2028, 2172, 2210, 2353, 2535, 2652, 2715, 2873, 3077, 3315, 3380, 3620, 4420, 4706, 5070, 5430, 5746, 6154, 6630, 7059, 8619, 9231, 9412, 10140, 10860, 11492, 11765, 12308, 13260, 14118, 14365, 15385, 17238, 18462, 23530, 28236, 28730, 30589, 30770, 34476, 35295, 36924, 40001, 43095, 46155, 47060, 57460, 61178, 61540, 70590, 80002, 86190, 91767, 92310, 120003, 122356, 141180, 152945, 160004, 172380, 183534, 184620, 200005, 240006, 305890, 367068, 400010, 458835, 480012, 520013, 600015, 611780, 800020, 917670, 1040026, 1200030, 1560039, 1835340, 2080052, 2400060, 2600065, 3120078, 5200130, 6240156, 7800195, 10400260, 15600390, 31200780]

約数ペア:

[(1, 31200780), (2, 15600390), (3, 10400260), (4, 7800195), (5, 6240156), (6, 5200130), (10, 3120078), (12, 2600065), (13, 2400060), (15, 2080052), (17, 1835340), (20, 1560039), (26, 1200030), (30, 1040026), (34, 917670), (39, 800020), (51, 611780), (52, 600015), (60, 520013), (65, 480012), (68, 458835), (78, 400010), (85, 367068), (102, 305890), (130, 240006), (156, 200005), (169, 184620), (170, 183534), (181, 172380), (195, 160004), (204, 152945), (221, 141180), (255, 122356), (260, 120003), (338, 92310), (340, 91767), (362, 86190), (390, 80002), (442, 70590), (507, 61540), (510, 61178), (543, 57460), (663, 47060), (676, 46155), (724, 43095), (780, 40001), (845, 36924), (884, 35295), (905, 34476), (1014, 30770), (1020, 30589), (1086, 28730), (1105, 28236), (1326, 23530), (1690, 18462), (1810, 17238), (2028, 15385), (2172, 14365), (2210, 14118), (2353, 13260), (2535, 12308), (2652, 11765), (2715, 11492), (2873, 10860), (3077, 10140), (3315, 9412), (3380, 9231), (3620, 8619), (4420, 7059), (4706, 6630), (5070, 6154), (5430, 5746)]